666383397179 has 2 divisors, whose sum is σ = 666383397180. Its totient is φ = 666383397178.

The previous prime is 666383397143. The next prime is 666383397187. The reversal of 666383397179 is 971793383666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666383397179 - 2³² = 662088429883 is a prime.

It is not a weakly prime, because it can be changed into another prime (666383357179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333191698589 + 333191698590.

It is an arithmetic number, because the mean of its divisors is an integer number (333191698590).

Almost surely, 2^666383397179 is an apocalyptic number.

666383397179 is a deficient number, since it is larger than the sum of its proper divisors (1).

666383397179 is an equidigital number, since it uses as much as digits as its factorization.

666383397179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185177664, while the sum is 68.

The spelling of 666383397179 in words is "six hundred sixty-six billion, three hundred eighty-three million, three hundred ninety-seven thousand, one hundred seventy-nine".